Trying to find the drivers for my lg r405-a t-5750 14.1" laptop. i recently downgraded from vista to windows xp home edition and i have to install the drivers but how do i find out what drivers were previously installed?

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You can install xp on a vista laptop, you will need an xp install cd and you will need to backup your data (it will be erased in the downgrade process). As for the drivers, go to your laptops manufactures site. They will have a support section for your laptop model where you can see if there are drivers for xp. If you have the hardware that will support windows 7, I would go with that. Xp is slow and no longer supported by Microsoft as of April 2014, which poses a security risk. Windows 7 will be supported for a while and is faster and more stable than xp or vista.

If you have OEM edition of Vista Business or Vista Ultimate, you can downgrade to Windows XP Professional, including Tablet PC Edition and x64 Edition. Only the OEM editions qualify for a downgrade.
To install a copy of Windows XP Professional with the product key that came with the copy, and then when you hit the activation screen -- which is near the end of the installation process -- select the activate by phone option rather than the online method. You'll likely end up talking with a live rep; tell him that you're downgrading from Vista to XP, and give him the Vista product key. The rep is supposed to walk you through the rest.

1. You must have a Windows XP CD.
2. If there is a CD Driver that came along with the laptop try and look for the one that says (XP Drivers)
3. If no driver CD included for XP you will have to download from thier site.

First and foremost before you try to downgrade your OS from Vista to XP make sure that you can find a working device driver for your laptop, if you check your manufacturer's website(Acer) see if they have XP drivers for your device because I had some clients that are having problem trying to make some of their device work(built in webcam, ethernet, wi-fi, sound) when they downgraded to XP for faster processing.

Yes you can downgrade it to windows xp. go to toshiba website www.toshiba.com and from there you can download the drivers for Windows XP. befor installing Windows XP please download the Network driver and save it on a CD or any other driver. Then install Windows XP. Install the network drivers, connect to the internet and install the other drivers required.

Owners of the OEM editions of Vista Business and Vista Ultimate can downgrade to Windows XP Professional, including Tablet PC Edition and x64 Edition. Only the OEM editions qualify for a downgrade, so if you purchased a new PC with either Business or Ultimate preinstalled, you're in like Flynn.

Those who aren't: All users of Vista Home Basic and Vista Home Premium, and anyone who upgraded to Vista using a retail edition of any of the operating system's SKUs. You are, as they say, SOL.

How do I downgrade? Install a copy of Windows XP Professional with the product key that came with the copy, and then when you hit the activation screen -- which is near the end of the installation process -- select the activate by phone option rather than the online method. You'll likely end up talking with a live rep; tell him that you're downgrading from Vista to XP, and give him the Vista product key. The rep is supposed to walk you through the rest.

Where do I get the XP install disc? Until this summer, Microsoft put the responsibility on the end users' shoulders. For example, in this Vista downgrade rights document (download PDF) targeting resellers, the company said "media is provided by the customer."

A few months ago, however, Microsoft relaxed, and began allowing resellers to provide Windows XP setup CDs to customers buying Vista Business- and Ultimate-equipped PCs. In some cases, discs are shipped with the PCs; in others, users must request them. Don't bother calling Microsoft; it won't provide installation media, and will instead direct you to your reseller.

If the computer maker won't send a Windows XP Pro disc, you're on your own. While perhaps not easy, getting your hands on the install media isn't impossible. Any copy of Windows XP Professional will do -- it doesn't matter if it's already been installed and/or whether the license is in use -- as long as you can find its product key. Install it (see "How do I downgrade?" above) using that key, then activate over the phone with the Vista key.

As a last resort, buy a copy. This isn't a downgrade, not as Microsoft defines it, but it's what most users think of when they use the term.

What can I do if I don't have downgrade rights? Nothing is stopping you from punting to XP other than the money invested in the Vista license already on the PC and what it will cost to replace it. The total may be inconsequential to some, a deal-breaker for others. But there are options.

Because you're paying for the swap, you can switch to any flavor of XP. Windows XP Home, for instance, typically sells online for between $50 and $90 less than Professional. Windows XP Media Center is usually priced between the two.

Once you pick an edition, you can choose from OEM, upgrade and full product versions, which are priced in that order, lowest first. OEM, often called "system builder," omits support and can only be installed on one machine, ever. Windows XP Home OEM is sold online at for around $90. The upgrade version, which runs about $100, can be installed, removed and installed on another PC, but requires proof that you own a legitimate copy of an older operating system. You don't need to install that predecessor, only insert its CD at some point during the XP installation. Eligible versions for an XP upgrade include Windows 98, Windows 98 SE and Windows Millennium.

Finally, there's the most expensive option: the full edition, which sells for around $190. No earlier Windows version is necessary to install this, and like the upgrade, it can be transferred later to another PC.

Of course, the most affordable downgrade is one using the XP installation CD you saved when you upgraded that well-worn machine of yours to Vista earlier this year. You did save it, right? If you didn't get an install disc with that box when you bought it -- and some vendors don't bother, instead slapping restore files in a hidden partition on the hard drive, which has been, of course, copied over by Vista -- you may be able to pry one from the reseller. Dell owners, for instance, can use an online form to request one free copy of the install CD.

I have XP and I'm ready to downgrade. Now what? From here, a downgrade is just like any clean install. You'll need to back up data files, record and/or copy settings and passwords, and make sure you have installation files and/or discs for the applications you'll reinstall in XP. If you've upgraded to software suitable for Vista, it's likely that the newer programs will also run under XP. Copying data and the application installation files you've downloaded from the Web is easiest if you plug in an external drive.

There aren't any downgrade utilities to do the kind of work that upgrade, or migration tools, provide when you're moving up in the world, operating system-wise, so don't bother looking for them. Pity.

Any caveats? Although Vista has been out for less than a year, that's plenty of time for change. If you bought a machine preinstalled with Vista, make sure there are XP drivers for the PC, its components and any new peripherals before you downgrade. Check the computer maker's site. If you find any major holes, reconsider.

I'm lazy but still want to downgrade. What are my options? If you're fed up with Vista, but not so sick of it that you're ready to face a complete mulligan on the operating system, virtualization might be for you. Add virtualization machine software on the Vista-running PC, create a VM, then install XP into the VM. You'll still need a licensed copy of Windows XP to be legit. Fortunately, unlike Vista, XP's EULA doesn't forbid virtualization. (Only Vista Business and Ultimate, the downgrader's friends, can be legally run in a virtual environment.)

you can not install under windows environment if it is a down grade. i thought maybe that is how you are doing because you said when you click intall...?? you have to boot your XP home from the cd drive and there you follow the instructions on how you wanted it installed. in XP series, you only get to use the mouse when windows is almost ready for intallation. but initial setup is in DOS mode only.

How to Downgrade Vista to XP
Downgrading from Windows Vista to Windows XP is almost like installing Windows XP for the first time. You should take all the normal precautions like backing up all your important files and record important passwords in a different place, preferably on a CD. When you downgrade from Windows Vista to XP, note that Windows Vista will be completely removed from your system.
(Note: There is a way to have both Vista and XP in a dual boot configuration, but that's an option for more advanced users. See Dual Booting Vista and XP for more info on that.)
Before you begin the XP installation, make sure that the necessary XP hardware drivers are available, or included on the XP disk provided by your PC vendor. If in doubt, check the vendor's website or poke around with your favorite search engine to see if others have attempted the XP install on the same hardware. You may be able to install XP without all the needed drivers, but some hardware may not work afterwards.
Also, make sure that you have a genuine Windows XP CD before you begin the downgrade. Be sure to read the section earlier in this article to see if you qualify for a low/no cost XP recovery disk from your PC vendor. If not, perhaps you have an XP disc that came with another computer. If you've upgraded an existing computer from XP to Vista, the best choice would be the XP install/recovery disc that came with that computer. One some PC's the vendor doesn't ship a CD, but the recovery CD can be created from disk images on the hard drive. If all else fails, you can always buy a copy of Windows XP on Ebay. Just be sure it's a legal, licensed copy.
Follow these steps to install Windows XP on your Vista machine:

Insert your Windows XP install/recovery CD and restart your computer.

Install Windows XP normally, providing either the product key that came with the disk, or the one you got from Microsoft customer support. If the installer warns you that another copy of Windows is already installed, don't worry. Remember, this install will wipe out your existing Vista installation.

Activate your copy of Windows XP when it prompts you to do so. If you run into the "already activated" problem, you can use the option to activate by phone.

If you own Vista Business or Vista Ultimate, explain to the rep that you want to use your Downgrade Rights to install XP Pro.

If you own Vista Home Basic/Premium, or you are installing XP Home Edition, don't mention ANYTHING about Vista. Just give the rep your XP product key (not the Vista key), explain that you are installing XP on a new hard drive, and tell them you need to activate.